<div class="container">

  <h1>Bootstrap grid examples</h1>
  <p class="lead">Basic grid layouts to get you familiar with building within the Bootstrap grid system.</p>

  <h3>Five grid tiers</h3>
  <p>There are five tiers to the Bootstrap grid system, one for each range of devices we support. Each tier starts at a minimum
    viewport size and automatically applies to the larger devices unless overridden.</p>

  <div class="row">
    <div class="col-4">.col-4</div>
    <div class="col-4">.col-4</div>
    <div class="col-4">.col-4</div>
  </div>

  <div class="row">
    <div class="col-sm-4">.col-sm-4</div>
    <div class="col-sm-4">.col-sm-4</div>
    <div class="col-sm-4">.col-sm-4</div>
  </div>

  <div class="row">
    <div class="col-md-4">.col-md-4</div>
    <div class="col-md-4">.col-md-4</div>
    <div class="col-md-4">.col-md-4</div>
  </div>

  <div class="row">
    <div class="col-lg-4">.col-lg-4</div>
    <div class="col-lg-4">.col-lg-4</div>
    <div class="col-lg-4">.col-lg-4</div>
  </div>

  <div class="row">
    <div class="col-xl-4">.col-xl-4</div>
    <div class="col-xl-4">.col-xl-4</div>
    <div class="col-xl-4">.col-xl-4</div>
  </div>

  <h3>Three equal columns</h3>
  <p>Get three equal-width columns
    <strong>starting at desktops and scaling to large desktops</strong>. On mobile devices, tablets and below, the columns will automatically
    stack.
  </p>
  <div class="row">
    <div class="col-md-4">.col-md-4</div>
    <div class="col-md-4">.col-md-4</div>
    <div class="col-md-4">.col-md-4</div>
  </div>

  <h3>Three unequal columns</h3>
  <p>Get three columns
    <strong>starting at desktops and scaling to large desktops</strong> of various widths. Remember, grid columns should add up to
    twelve for a single horizontal block. More than that, and columns start stacking no matter the viewport.</p>
  <div class="row">
    <div class="col-md-3">.col-md-3</div>
    <div class="col-md-6">.col-md-6</div>
    <div class="col-md-3">.col-md-3</div>
  </div>

  <h3>Two columns</h3>
  <p>Get two columns
    <strong>starting at desktops and scaling to large desktops</strong>.</p>
  <div class="row">
    <div class="col-md-8">.col-md-8</div>
    <div class="col-md-4">.col-md-4</div>
  </div>

  <h3>Full width, single column</h3>
  <p class="text-warning">No grid classes are necessary for full-width elements.</p>

  <hr>

  <h3>Two columns with two nested columns</h3>
  <p>Per the documentation, nesting is easy—just put a row of columns within an existing column. This gives you two columns
    <strong>starting at desktops and scaling to large desktops</strong>, with another two (equal widths) within the larger column.</p>
  <p>At mobile device sizes, tablets and down, these columns and their nested columns will stack.</p>
  <div class="row">
    <div class="col-md-8">
      .col-md-8
      <div class="row">
        <div class="col-md-6">.col-md-6</div>
        <div class="col-md-6">.col-md-6</div>
      </div>
    </div>
    <div class="col-md-4">.col-md-4</div>
  </div>

  <hr>

  <h3>Mixed: mobile and desktop</h3>
  <p>The Bootstrap v4 grid system has five tiers of classes: xs (extra small), sm (small), md (medium), lg (large), and xl (extra
    large). You can use nearly any combination of these classes to create more dynamic and flexible layouts.</p>
  <p>Each tier of classes scales up, meaning if you plan on setting the same widths for xs and sm, you only need to specify
    xs.
  </p>
  <div class="row">
    <div class="col-12 col-md-8">.col-12 .col-md-8</div>
    <div class="col-6 col-md-4">.col-6 .col-md-4</div>
  </div>
  <div class="row">
    <div class="col-6 col-md-4">.col-6 .col-md-4</div>
    <div class="col-6 col-md-4">.col-6 .col-md-4</div>
    <div class="col-6 col-md-4">.col-6 .col-md-4</div>
  </div>
  <div class="row">
    <div class="col-6">.col-6</div>
    <div class="col-6">.col-6</div>
  </div>

  <hr>

  <h3>Mixed: mobile, tablet, and desktop</h3>
  <p></p>
  <div class="row">
    <div class="col-12 col-sm-6 col-lg-8">.col-12 .col-sm-6 .col-lg-8</div>
    <div class="col-6 col-lg-4">.col-6 .col-lg-4</div>
  </div>
  <div class="row">
    <div class="col-6 col-sm-4">.col-6 .col-sm-4</div>
    <div class="col-6 col-sm-4">.col-6 .col-sm-4</div>
    <div class="col-6 col-sm-4">.col-6 .col-sm-4</div>
  </div>

</div>